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1994年7月中国地震局工程力学研究所在唐山余震区响堂镇建成了我国第一个三维场地影响观测台阵。该台阵目前有四个测点，分别布设在基岩地表、上层地表、地下17m和地下32m处。它安装了分辨率为16位的井下数字观测系统，主机和从机同步运行，系统时钟采用Omega导航信号自动校对（精度1ms），地震数据采用固态方式（CMOS）存储，每个测点均布设一组三分量力平衡式加速度计。该台阵自投入运行至1997年12月已取得了60个包括不同深度的地震加速度记录（ML＝1.5～5．9），最大地表峰值加速度为60．11cm/s2。这些记录震相完整，波形清楚，计时准确，为进行局场地条件对地震动影响的研究提供了宝贵的数据基础。
In July 1994, Institute of Engineering Mechanics, China Seismological Bureau, built the first observatory of three-dimensional site impact in Tangshan Town, Tangshan aftershock area. The array currently has four measuring points, respectively, laid in the bedrock surface, the upper surface, 17m underground and 32m underground. It is equipped with a 16-bit downhole digital observation system with master and slave running synchronously. The system clock is automatically calibrated using Omega navigation signals (1 ms accuracy) and the seismic data is stored in solid-state (CMOS) mode. Each measurement point is routed A set of three-component force-balanced accelerometer. The array has obtained 60 seismic acceleration records (ML = 1.5 ~ 5.9) with different depths since its commencement of operation till December 1997, with the maximum peak surface acceleration of 60.11cm / s2. These records are complete in phase, clear in waveform and accurate in timing, which provide a valuable data foundation for the study on the influence of site conditions on earthquakes.